John M. Efron Books

Defenders of the Race: Jewish Doctors and Race Science in Fin-de-Siecle Europe

By John M. Efron

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German Jewry and the Allure of the Sephardic

By John M. Efron

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German Jewry and the Allure of the Sephardic

By John M. Efron

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The Jews: A History

By John M. Efron

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"The Jews: A History, 2/e, explores the religious, cultural, social, and economic diversity of the Jewish people and their faith. The latest edition incorporates new research and includes a broader...

Medicine and the German Jews

By John M. Efron

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Medicine and the German Jews

By John M. Efron

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"Medicine played an important role in the early secularization and eventual modernization of German Jewish culture. And as both physicians and patients, Jews exerted a great influence on the format...

Jews

By John Efron, Steven Weitzman, Matthias Lehmann

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Jews

By John Efron, Steven Weitzman, Matthias Lehmann

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Medicine and the German Jews

By John M. Efron

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.